Bug#486795: lintian: maintainer email is case-insensitive

[Russ Allbery <rra@debian.org>]

Christoph Martin <martin@uni-mainz.de> writes:

> Package: lintian
> Version: 1.24.0~bpo40+1
> Severity: normal
>
> If only the case of the email address in the changelog differs from
> the case of the email address in the Maintainer field, lintian thinks
> falsly it is a NMU with the following warnings:
>
>  W changelog-should-mention-nmu
>
>  W source-nmu-has-incorrect-version-number
>
> However email addresses are case-insensitive.

Technically only the part after the @ is case-insensitive, although I
expect in practice that's the part that varies in case the most
frequently.  Yeah, downcasing the domain part of the e-mail address before
comparing sounds right to me.

Is Lintian now the only software that cares about whether or not something
is an NMU?  It used to be that dak also cared to set the fixed tag, and I
don't know if dak canonicalizes the e-mail address, but I think dak
doesn't care any more now that we have version tracking.

-- 
Russ Allbery (rra@debian.org)               <http://www.eyrie.org/~eagle/>